Motor rotor pressing and fastening tool and pressing device

Abstract

The utility model belongs to the technical field of motor rotor manufacturing, and discloses a motor rotor pressing and fastening tool and a pressing device. The motor rotor pressing and fastening tool comprises a cover plate, a bottom plate and a plurality of elastic low-voltage assemblies, the cover plate and the bottom plate are detachably and oppositely arranged, and a containing space used for containing a rotor is formed between the cover plate and the bottom plate; the plurality of elastic pressing assemblies are uniformly distributed along the circumferential direction of the rotor and are arranged on one of the bottom plate and the cover plate, one ends of the plurality of elastic pressing assemblies extend into the accommodating space and are elastically pressed on one side of the rotor, and the other one of the bottom plate and the cover plate is pressed on the other side of the rotor. The elastic abutting assemblies elastically abut against the rotor disc, it can be guaranteed that each elastic abutting assembly can make contact with the rotor disc, the multiple elastic abutting assemblies are evenly distributed in the circumferential direction of the rotor, and it can be guaranteed that the rotor disc is evenly pressed, so that each magnetic steel can make full contact with the cover plate or the bottom plate, and then each magnetic steel is evenly pressed; and the product quality can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor rotor manufacturing, in particular to a motor rotor pressing and fastening tooling and a pressing device. Background Art

[0002] An axial magnetic field motor, also known as a disc motor, has the advantages of small axial dimension, high torque density, high power density, and high efficiency, and is widely used in fields such as electric vehicles, general industry, and household appliances. From the current structure of the disc motor rotor, the magnetic steel is a single-piece design, and the single-piece magnetic steels are arranged according to the NS poles and bonded to the rotor disc with glue. During the manufacturing process of the motor rotor, glue needs to be applied to the rotor disc first, and then each magnetic steel is pressed tightly on the rotor disc through a pressing and fastening tooling, and then placed in a curing furnace for glue curing. In the existing pressing and fastening tooling, when pressing the magnetic steel and the rotor disc, the pressure on each magnetic steel is uneven, resulting in poor height consistency of each magnetic steel and even quality problems.

[0003] Therefore, there is an urgent need to provide a motor rotor pressing and fastening tooling and a pressing device to solve the above problems. Summary of the Utility Model

[0004] One object of the utility model is to provide a motor rotor pressing and fastening tooling, and the evenly distributed elastic pressing components can make the pressure on each magnetic steel as even as possible, improving the height consistency of each magnetic steel.

[0005] Another object of the utility model is to provide a pressing device. By driving the cover plate to move through a pressing mechanism, automatic pressing of the cover plate can be achieved, improving the degree of automation and saving labor costs.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] The motor rotor pressing and fastening tooling includes:

[0008] A cover plate and a bottom plate, which are detachably arranged opposite to each other. An accommodation space for placing the rotor is formed between the cover plate and the bottom plate. The rotor includes a rotor disc and a plurality of magnetic steels embedded on one side of the rotor disc;

[0009] A plurality of elastic pressing components, which are evenly distributed along the circumferential direction of the rotor disc and arranged on one of the bottom plate and the cover plate. One ends of the plurality of elastic pressing components extend into the accommodation space and simultaneously elastically press on the rotor disc, and the other of the bottom plate and the cover plate presses on the plurality of magnetic steels.

[0010] As an alternative solution, the permanent magnet is arranged towards the cover plate, the cover plate presses against the permanent magnet, and the elastic pressing assembly is arranged on the bottom plate and elastically abuts against the rotor disc.

[0011] As an alternative solution, the elastic pressing assembly includes:

[0012] A pressing member movably penetrating through the bottom plate, one end of the pressing member extending into the accommodating space and capable of abutting against the rotor disc, and the other end being capable of being in limit cooperation with the bottom surface of the bottom plate;

[0013] An elastic member. A limiting groove is formed on the bottom plate. The elastic member is accommodated in the limiting groove and sleeved outside the pressing member. One end of the elastic member abuts against the pressing member, and the other end abuts against the bottom of the limiting groove.

[0014] Through the above arrangement, under the action of the elastic member, it can be ensured that each pressing member can contact and press against the rotor disc, ensuring uniform pressure on the rotor disc, and further ensuring uniform pressure on each permanent magnet.

[0015] As an alternative solution, the elastic member is a rectangular spring. The rectangular spring has good load-bearing capacity, high stability and durability.

[0016] As an alternative solution, the pressing member includes a connected pressing block and a limiting portion. The pressing block extends into the accommodating space and can abut against the rotor disc. The outer diameter of the pressing block is larger than the outer diameter of the limiting portion. The elastic member is sleeved on the limiting portion and one end of it abuts against the pressing block. The end of the limiting portion away from the pressing block movably penetrates through the bottom plate and can be in limit cooperation with the bottom surface of the bottom plate.

[0017] As an alternative solution, a limiting boss is formed at the end of the limiting portion away from the pressing block. The outer diameter of the limiting boss is larger than the outer diameter of the limiting portion. One side of the limiting boss close to the limiting portion can abut against the bottom surface of the bottom plate.

[0018] When no rotor is placed on the pressing member, under the elastic force of the elastic member, the limiting boss abuts against the bottom surface of the bottom plate, preventing the pressing member from disengaging from the bottom plate due to the elastic force.

[0019] As an alternative solution, the pressing block and the limiting portion are detachably connected. With such an arrangement, it is convenient to install the pressing member on the bottom plate.

[0020] As an alternative solution, a first connection hole axially penetrating is provided on the pressing block, and a second connection hole is provided at the end of the limiting portion close to the pressing block. A fastening screw sequentially penetrates through the first connection hole and the second connection hole to fix the pressing block and the limiting portion, with firm connection and convenient disassembly and assembly.

[0021] As an alternative solution, the inner diameter of the limiting groove is larger than the outer diameter of the pressing block. With this setting, when the rotor disk presses down the pressing block, the pressing block can move into the limiting groove and normally compress the elastic member, avoiding interference between the pressing block and the bottom plate, which may affect the compression of the elastic member and further affect the pressing force against the rotor disk.

[0022] A pressing device includes a downward pressing mechanism and the above-mentioned motor rotor pressing and fastening tooling. The downward pressing mechanism is used to drive the cover plate to move towards the bottom plate to press the rotor tightly.

[0023] Advantages of the present utility model:

[0024] The present utility model provides a motor rotor pressing and fastening tooling, which can press the rotor in the accommodating space. Among them, the rotor disk is pressed tightly by a plurality of evenly distributed elastic pressing components, and a plurality of magnetic steel are pressed tightly by the bottom plate or the cover plate. The elastic pressing components are elastically pressed against the rotor disk, which can ensure that each elastic pressing component can contact and press against the rotor disk. The plurality of elastic pressing components are arranged in an evenly distributed manner along the circumference of the rotor, which can ensure that the rotor disk is evenly pressed, and the rotor disk presses on each magnetic steel, so that each magnetic steel can fully contact the cover plate or the bottom plate, and further make each magnetic steel evenly pressed, improving the height consistency of each magnetic steel, which is beneficial to improving the product quality.

[0025] The present utility model also provides a pressing device, including a downward pressing mechanism and the above-mentioned motor rotor pressing and fastening tooling. By driving the cover plate to move through the downward pressing mechanism, automatic pressing of the cover plate can be realized, improving the degree of automation and saving labor costs. Brief Description of the Drawings

[0026] Figure 1 is an exploded view of the motor rotor pressing and fastening tooling provided by the present utility model Figure 1 ;

[0027] Figure 2 is a cross-sectional view of the motor rotor pressing and fastening tooling provided by the present utility model;

[0028] Figure 3 is an exploded view of the motor rotor pressing and fastening tooling provided by the present utility model Figure 2 ;

[0029] Figure 4 is a structural schematic diagram of the locking component provided by the present utility model.

[0030] In the figure:

[0031] 100, rotor; 101, rotor disk; 1011, central hole; 1012, positioning hole; 102, magnetic steel;

[0032] 10. Cover plate; 11. Steel plate; 12. Aluminum plate; 13. Stainless steel thin plate; 14. Equal-height screw; 15. Centering ring; 16. Positioning pin;

[0033] 20. Bottom plate; 21. Limit groove; 22. Lock hole; 221. Round hole; 222. Strip hole; 23. Accommodating groove;

[0034] 30. Elastic pressing component; 31. Pressing member; 311. Pressing block; 3111. First connection hole; 312. Limiting portion; 3121. Second connection hole; 313. Limiting boss; 32. Elastic member;

[0035] 40. Locking component; 41. Locking rod; 411. Rod portion; 412. Locking pin; 42. Rotating handle; 43. Limiting guide sleeve; 431. Limiting protrusion; 432. Limiting groove; 44. Limiting pin; 45. Gasket;

[0036] 50. Accommodating space. Detailed implementation manner

[0037] The present utility model will be further described in detail below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the convenience of description, only parts related to the present utility model are shown in the drawings, rather than all the structures.

[0038] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0039] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0040] In the description of this embodiment, the terms "upper", "lower", "right", etc., which indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of description and simplifying operations, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0041] This embodiment provides a motor rotor pressing and fastening tooling for pressing the rotor 100. Among them, the rotor 100 is the rotor of an axial magnetic field motor, which includes a rotor disc 101 and a plurality of permanent magnets 102 embedded on one side of the rotor disc 101. The plurality of permanent magnets 102 are arranged according to the NS poles and are bonded to the rotor disc 101 using glue. During the manufacturing process of the rotor 100, glue needs to be applied to the rotor disc 101 first, and then each permanent magnet 102 is pressed onto the rotor disc 101 by this motor rotor pressing and fastening tooling, and then placed in a curing furnace for glue curing.

[0042] Specifically, as Figure 1 and Figure 2 shown, this motor rotor pressing and fastening tooling includes a cover plate 10, a bottom plate 20, and a plurality of elastic pressing components 30. The cover plate 10 and the bottom plate 20 are detachably arranged opposite to each other. A receiving space 50 for placing the rotor 100 is formed between the cover plate 10 and the bottom plate 20, and the permanent magnets 102 face the cover plate 10; the plurality of elastic pressing components 30 are evenly distributed along the circumference of the rotor 100 and are arranged on the bottom plate 20. One end of the plurality of elastic pressing components 30 extends into the receiving space 50 and simultaneously elastically presses on the rotor disc 101, and the cover plate 10 presses on the plurality of permanent magnets 102.

[0043] During use, the assembled rotor 100 is placed on the plurality of elastic pressing components 30 on the bottom plate 20 in such a way that the permanent magnets 102 face the cover plate 10. Then, the cover plate 10 is connected to the bottom plate 20, so that the cover plate 10 and the plurality of elastic pressing components 30 cooperate to press the rotor 100 tightly and wait for curing. Among them, the rotor disc 101 is pressed tightly by the plurality of evenly distributed elastic pressing components 30, and the plurality of permanent magnets 102 are pressed tightly by the cover plate 10. The elastic pressing components 30 are elastically pressed against the rotor disc 101, which can ensure that each elastic pressing component 30 can contact and press against the rotor disc 101. The plurality of elastic pressing components 30 are evenly distributed along the circumference of the rotor 100, which can try to ensure that the rotor disc 101 is evenly pressed. On this basis, each permanent magnet 102 can fully contact the cover plate 10, and further each permanent magnet 102 is evenly pressed, improving the height consistency of each permanent magnet 102, which is beneficial to improving product quality.

[0044] In another alternative implementation, the rotor 100 can also be flipped so that the permanent magnets 102 face the bottom plate 20. At this time, a plurality of elastic pressing components 30 are arranged on the cover plate 10, the rotor disk 101 is pressed tightly by the plurality of evenly distributed elastic pressing components 30, and the plurality of permanent magnets 102 are pressed tightly by the bottom plate 20.

[0045] In this embodiment, as Figure 1 shown, the elastic pressing components 30 are provided in eight numbers. The eight elastic pressing components 30 are evenly arranged along the circumference of the rotor disk 101 and can simultaneously press on the rotor disk 101, so as to ensure uniform pressure on the rotor disk 101. In other embodiments, the number of the elastic pressing components 30 can also be set to other numbers, which can be flexibly set according to the size of the rotor disk 101 and the number of the permanent magnets 102, and no specific limitation is made here.

[0046] In this embodiment, as Figure 1 and Figure 2 shown, the elastic pressing component 30 includes a pressing member 31 and an elastic member 32. The pressing member 31 movably passes through the bottom plate 20. One end of the pressing member 31 extends into the accommodating space 50 and can be in contact with the rotor disk 101, and the other end can be in limit cooperation with the bottom surface of the bottom plate 20; a limiting groove 21 is formed on the bottom plate 20, the elastic member 32 is accommodated in the limiting groove 21 and sleeved outside the pressing member 31. One end of the elastic member 32 abuts against the pressing member 31, and the other end abuts against the bottom of the limiting groove 21. Referring to Figure 2 , when installing the cover plate 10, first press down the cover plate 10. The cover plate 10 applies pressure to the permanent magnets 102 downward. At the same time, the rotor disk 101 applies pressure to the pressing member 31 downward. The pressing member 31 moves downward and compresses the elastic member 32 until the cover plate 10 is installed in place. The elastic force of the elastic member 32 acting on the pressing member 31 in the reverse direction is the pressing force applied by the pressing member 31 on the rotor disk 101. Through the above settings, under the action of the elastic member 32, it can be ensured that each pressing member 31 can be in contact with and press on the rotor disk 101, ensuring uniform pressure on the rotor disk 101, and further ensuring uniform pressure on each permanent magnet 102.

[0047] In an alternative embodiment, the elastic member 32 is a rectangular spring, which has good load-bearing capacity, high stability and durability.

[0048] Specifically, as Figure 2 shown, the pressing member 31 includes a pressing block 311 and a limiting portion 312 which are connected. The pressing block 311 extends into the accommodating space 50 and can be in contact with the rotor disk 101. The outer diameter of the pressing block 311 is larger than the outer diameter of the limiting portion 312. The elastic member 32 is sleeved on the limiting portion 312 and one end of it abuts against the pressing block 311. The end of the limiting portion 312 away from the pressing block 311 movably passes through the bottom plate 20 and can be in limit cooperation with the bottom surface of the bottom plate 20. That is to say, the pressing block 311 and the bottom of the limiting groove 21 can respectively limit the two free ends of the elastic member 32.

[0049] As Figure 2 shown, a limiting boss 313 is formed at one end of the limiting portion 312 away from the pressing block 311. The outer diameter of the limiting boss 313 is larger than that of the limiting portion 312. One side of the limiting boss 313 close to the limiting portion 312 can abut against the bottom surface of the bottom plate 20. When the rotor 100 is not placed on the pressing member 31, under the elastic force of the elastic member 32, the limiting boss 313 abuts against the bottom surface of the bottom plate 20, preventing the pressing member 31 from detaching from the bottom plate 20 due to the elastic force.

[0050] Furthermore, the pressing block 311 and the limiting portion 312 are detachably connected. This setting facilitates the processing of the pressing block 311 and the limiting portion 312, and at the same time facilitates the installation of the pressing member 31 on the bottom plate 20.

[0051] In an alternative embodiment, as Figure 2 shown, a first connection hole 3111 penetrating axially is provided on the pressing block 311, and a second connection hole 3121 is provided at one end of the limiting portion 312 close to the pressing block 311. The fastening screw sequentially passes through the first connection hole 3111 and the second connection hole 3121 to fix the pressing block 311 and the limiting portion 312. Among them, the first connection hole 3111 is a smooth hole, and the second connection hole 3121 is a threaded hole. After the fastening screw passes through the first connection hole 3111, it is threadedly connected to the second connection hole 3121. Exemplarily, referring to Figure 2 , during installation, the end of the limiting portion 312 away from the limiting boss 313 can be inserted into the limiting groove 21 from the bottom of the bottom plate 20, then the pressing block 311 is placed on the upper end of the limiting portion 312 from the upper side of the bottom plate 20, and then the fastening screw is passed through the first connection hole 3111 of the pressing block 311 from the upper side of the bottom plate 20 and threadedly connected to the second connection hole 3121 of the limiting portion 312.

[0052] In another alternative embodiment, a stud can also be directly machined on one of the pressing block 311 and the limiting portion 312, and a threaded hole is machined on the other one, so that the pressing block 311 and the limiting portion 312 are directly threadedly connected. As Figure 2 shown, the inner diameter of the limiting groove 21 is larger than the outer diameter of the pressing block 311. This setting enables the pressing block 311 to move into the limiting groove 21 and normally compress the elastic member 32 when the rotor disk 101 presses down the pressing block 311, preventing interference between the pressing block 311 and the bottom plate 20 from affecting the compression of the elastic member 32, and further affecting the pressing force on the rotor disk 101.

[0053] As Figures 1 to 3As shown, the motor rotor pressing and fastening tooling further includes a locking assembly 40. The locking assembly 40 includes a locking rod 41. The locking rod 41 is rotatably inserted through the cover plate 10 in the circumferential direction. A locking hole 22 for inserting one end of the locking rod 41 is provided on the bottom plate 20. The locking rod 41 can rotate circumferentially within the locking hole 22 to lock or unlock with the bottom plate 20. During the installation of the cover plate 10, the locking rod 41 on the cover plate 10 passes through the locking hole 22. At the same time, the cover plate 10 compresses the elastic member 32 by pressing against the rotor 100. After the cover plate 10 reaches the preset position, by rotating the locking rod 41, it can be fixed within the locking hole 22, realizing the locking of the locking rod 41 with the bottom plate 20, thereby realizing the fixed connection between the cover plate 10 and the bottom plate 20 to press the rotor 100 tightly; when disassembling the cover plate 10, only need to rotate the locking rod 41 in the reverse direction, and the locking rod 41 can be disengaged from the locking hole 22, realizing the disassembly of the cover plate 10 and the bottom plate 20. By providing the above-mentioned locking assembly 40, the rapid installation and disassembly of the cover plate 10 and the bottom plate 20 can be realized, and the operation is convenient and fast.

[0054] Specifically, as Figures 1 to 4 shown, the locking rod 41 includes a rod portion 411 and a locking pin 412. The rod portion 411 is inserted through the cover plate 10. The rod portion 411 is axially fixed on the cover plate 10 and can rotate circumferentially relative to the cover plate 10. The locking pin 412 is connected to one end of the rod portion 411 close to the bottom plate 20 and penetrates the rod portion 411 in the radial direction. The two free ends of the locking pin 412 respectively protrude from the circumferential side of the rod portion 411. The rod portion 411 can rotate circumferentially within the locking hole 22 so that the locking pin 412 can switch between a position facing the locking hole 22 and a position avoiding the locking hole 22. Among them, both the rod portion 411 and the locking pin 412 can be selected as cylindrical rods. The two free ends of the locking pin 412 respectively protrude from the circumferential side of the rod portion 411, so that the locking pin 412 and the rod portion 411 are configured into a T-shaped structure. The locking rod 41 of this form has a simple structure and can be well limited and matched with the locking hole 22 to prevent it from coming out of the locking hole 22.

[0055] Among them, the end face shape of the locking hole 22 is adapted to that of the locking rod 41. Specifically, as Figure 1As shown, the keyhole 22 includes a circular hole 221 and strip-shaped holes 222 symmetrically connected to both sides of the circular hole 221. The circular hole 221 is adapted to the rod portion 411, and the two strip-shaped holes 222 are adapted to the locking pins 412. When installing the cover plate 10, first ensure that the rod portion 411 is aligned with the circular hole 221, and the locking pins 412 are aligned with the strip-shaped holes 222. Then press down the cover plate 10, insert the locking rod 41 into the keyhole 22 of the bottom plate 20, and make the locking pins 412 pass through to the other side of the bottom plate 20. Then rotate the rod portion 411 axially so that the locking pins 412 are rotated to a position avoiding the strip-shaped holes 222 and axially limited to one side of the bottom plate 20. At this time, the cover plate 10 is locked with the bottom plate 20 through the locking rod 41. When it is necessary to remove the cover plate 10, just rotate the rod portion 411 in the reverse direction so that the locking pins 412 are aligned with the strip-shaped holes 222, and the cover plate 10 and the bottom plate 20 can be unlocked. The structure of the locking rod 41 is simple and stable, easy to operate, facilitating the rapid assembly and disassembly of the cover plate 10 and the bottom plate 20. At the same time, during the rotation locking process, it can ensure that the magnetic steel 102 is axially stressed evenly and not affected by radial force.

[0056] It should be noted that during the process of pressing down the cover plate 10 under external pressure, when the rectangular spring is completely compressed, the locking rod 41 can be smoothly locked into the keyhole 22. When the external pressure is withdrawn, the rectangular spring stretches a certain length and tightens the locking rod 41 to keep the magnetic steel 102 under pressure.

[0057] As Figure 1 shown, a rotating handle 42 is connected to one end of the locking rod 41 away from the bottom plate 20. By rotating the rotating handle 42, the operator can drive the locking rod 41 to rotate, thereby realizing the locking and unlocking of the locking rod 41, which is convenient to operate. The rotating handle 42 and the locking rod 41 can be fixedly connected by interference fit, threaded connection, snap connection, etc., and no specific limitation is made here.

[0058] In an optional embodiment, as Figure 1 and Figure 2 shown, the locking assembly 40 further includes a limit guide sleeve 43. The limit guide sleeve 43 is inserted through the cover plate 10. One side of the limit guide sleeve 43 away from the bottom plate 20 abuts against the surface of the cover plate 10 and is fixedly connected to the cover plate 10 by screws. The locking rod 41 passes through the limit guide sleeve 43 and can rotate circumferentially within the limit guide sleeve 43. The lower surface of the rotating handle 42 abuts against the upper surface of the limit guide sleeve 43. The strength of the limit guide sleeve 43 is higher than that of the cover plate 10, and it rotates in cooperation with the locking rod 41 to prevent the cover plate 10 from being worn and deformed due to the long-term rotation cooperation between the locking rod 41 and the cover plate 10.

[0059] In an optional embodiment, as Figure 4As shown, at one end of the limit guide sleeve 43 away from the rotating handle 42, two oppositely arranged limit protrusions 431 protrude. A limit groove 432 is formed between the two limit protrusions 431. The locking assembly 40 further includes a limit pin 44. The limit pin 44 is connected to the rod portion 411 and penetrates the rod portion 411 in the radial direction. The two free ends of the limit pin 44 respectively protrude from the circumferential side of the rod portion 411. Each limit pin 44 is respectively located in the corresponding limit groove 432 and can respectively abut against the two limit protrusions 431. By rotating the locking rod 41 clockwise and counterclockwise along the axis, the limit pin 44 can be driven to rotate in the limit groove 432. When the limit pin 44 respectively abuts against the two limit protrusions 431, it indicates that the locking pins 412 respectively reach two rotation limit positions. The two limit positions are respectively the position where the locking pin 412 is aligned with the strip-shaped hole 222 and the position perpendicular to the strip-shaped hole 222, that is, the unlocking position and the locking position of the locking rod 41. Secondly, the limit pin 44 cooperates with the bottom of the limit groove 432 to limit the upward movement of the locking rod 41 in the axial direction. The rotating handle 42 cooperates with the limit guide sleeve 43 to limit the downward movement of the locking rod 41 in the axial direction, thereby restricting the axial movement of the locking rod 41.

[0060] In an alternative embodiment, as Figure 2 and Figure 3 shown, the locking assembly 40 further includes a gasket 45. A receiving groove 23 is formed on the side of the bottom plate 20 away from the cover plate 10. The receiving groove 23 communicates with the lock hole 22. The gasket 45 is arranged in the receiving groove 23 and fixed to the bottom of the receiving groove 23 by screws. A hole for the locking rod 41 to pass through is formed on the gasket 45, and the shape of the hole is the same as that of the lock hole 22. When the locking pin 412 is located at the position avoiding the strip-shaped hole 222, the locking pin 412 abuts against the gasket 45. The gasket 45 is preferably a steel gasket, and its strength is greater than that of the bottom plate 20, avoiding the bottom plate 20 from being worn and deformed due to the long-term contact between the locking pin 412 and the bottom plate 20.

[0061] In this embodiment, as Figure 1 shown, five locking assemblies 40 are provided. One of the locking assemblies 40 is arranged at the central position of the cover plate 10, passes through the rotor disk 101 and cooperates with the lock hole 22 at the center of the bottom plate 20. The remaining four locking assemblies 40 are arranged at the four corner positions of the cover plate 10 and cooperate with the lock holes 22 at the four corners of the bottom plate 20. Such an arrangement can ensure that the cover plate 10 is uniformly stressed and will not deform. At the same time, during the rotation and locking process, the axial forces on the permanent magnets 102 can be ensured to be uniform. In other embodiments, the number of the locking assemblies 40 can also be set to other numbers and can be flexibly set according to actual needs, and no specific limitation is made here.

[0062] In an alternative embodiment, as Figures 1 to 3As shown, the cover plate 10 includes an overlapping aluminum plate 12 and a steel plate 11. The aluminum plate 12 is disposed on one side of the steel plate 11 close to the bottom plate 20, and the steel plate 11 is fixedly connected to the aluminum plate 12. Since the structural strength of the aluminum plate 12 is low and it is prone to deformation, and the magnet 102 is a strong magnet with a large magnetic force, the combined effect of the magnetic force and the pressing force of the locking assembly 40 cannot be borne by the single aluminum plate 12 alone. Moreover, the single steel plate 11 will be attracted to the magnet 102, resulting in the cover plate 10 not being easily opened after the tooling is used. Therefore, by overlapping the steel plate 11 on the aluminum plate 12, the pressing force of the locking assembly 40 is applied to the steel plate 11, avoiding the deformation of the aluminum plate 12 and improving the overall structural strength of the cover plate 10. And the aluminum plate 12 is disposed between the steel plate 11 and the magnet 102, which can play a role in magnetic isolation, preventing the steel plate 11 from being attracted to the magnet 102 and causing the cover plate 10 to not open.

[0063] As Figures 1 to 3 shown, the thickness of the steel plate 11 is less than the thickness of the aluminum plate 12. This setting takes into account both cost and overall weight while providing sufficient support by the steel plate 11 and meeting the magnetic isolation requirements by the aluminum plate 12. The specific thicknesses of the steel plate 11 and the aluminum plate 12 are not specifically limited herein and can be flexibly set under the premise of meeting the actual requirements.

[0064] However, the hardness of the aluminum plate 12 is low and the surface strength is insufficient. If it is in direct contact with the magnet 102, the surface of the aluminum plate 12 is easily scratched and damaged by the magnet 102 under the action of the pressing force. Therefore, in this embodiment, as Figure 2 and Figure 3 shown, a stainless steel thin plate 13 is further disposed on the side of the aluminum plate 12 close to the magnet 102, and the stainless steel thin plate 13 presses against the surface of each magnet 102 to apply the pressing force. The stainless steel thin plate 13 has high strength and hardness and also has a magnetic isolation effect, thus avoiding the aluminum plate 12 from being directly pressed against the magnet 102 and causing the aluminum plate 12 to be scratched and damaged, and at the same time avoiding being attracted to the magnet 102 and causing the cover plate 10 not to be easily opened.

[0065] Specifically, as Figure 3 shown, the locking rod 41 passes through the steel plate 11 and the aluminum plate 12, and notches are respectively provided at the four corners of the stainless steel thin plate 13 to avoid the locking rod 41 of the locking assembly 40. Among them, the notches are approximately fan-shaped notches, which are directly formed during the processing of the stainless steel thin plate 13, avoiding opening too many holes on the stainless steel thin plate 13 and affecting its structural strength and processing efficiency.

[0066] In an alternative embodiment, as Figure 3As shown, the edge of the stainless-steel thin plate 13 is fixed to the aluminum plate 12 by a plurality of screws 14 of the same height. However, the screws 14 of the same height are not in a completely locked state, but there is a certain gap, so that the stainless-steel thin plate 13 can float in its plane and along the axial direction of the screws 14 of the same height. Such a setting can enable the stainless-steel thin plate 13 to have a certain moving space, so that the stainless-steel thin plate 13 can contact all the magnets 102 as much as possible, with more sufficient contact, thereby making the pressure on each magnet 102 uniform.

[0067] In an alternative embodiment, as Figures 1 to 3 shown, two symmetric positioning pins 16 are provided on the side of the aluminum plate 12 close to the bottom plate 20. Positioning holes 1012 are opened at the positions corresponding to the positioning pins 16 at the center of the rotor disc 101. The positioning pins 16 are inserted and matched with the positioning holes 1012. Through the insertion and matching of the positioning pins 16 and the positioning holes 1012, the rotor disc 101 can be prevented from moving when the rotor disc 101 is pressed, thus ensuring the pressing and curing effect.

[0068] In an alternative embodiment, as Figure 2 and Figure 3 shown, a centering ring 15 is fixedly connected to the center of the side of the aluminum plate 12 close to the bottom plate 20. Two symmetric lugs are provided on the circumferential side of the centering ring 15, and the above-mentioned positioning pins 16 protrude from each lug. Along the direction close to the bottom plate 20, the centering ring 15 is higher than the positioning pins 16. An avoidance hole for avoiding the centering ring 15 is opened at the center of the stainless-steel thin plate 13. A center hole 1011 for inserting and matching with the centering ring 15 is provided at the center of the rotor disc 101. Before the positioning pins 16 are inserted into the positioning holes 1012, the centering ring 15 is first inserted into the center hole 1011, thereby performing an initial positioning on the positions of the positioning pins 16, which is convenient for the subsequent cooperation between the positioning pins 16 and the positioning holes 1012.

[0069] This embodiment also provides a pressing device, including a downward pressing mechanism (not shown) and the above-mentioned motor rotor pressing and curing tooling. The downward pressing mechanism is used to drive the cover plate 10 to move in the direction close to the bottom plate 20 to press the rotor 100. By driving the cover plate 10 to move downward through the downward pressing mechanism, automatic pressing of the cover plate 10 can be realized, improving the degree of automation and saving labor costs.

[0070] Among them, the pressing-down mechanism is similar to a common press in the prior art, and mainly includes a frame, a linear driving structure fixed on the frame, and a pressing-down member connected to the output end of the linear driving structure. The pressing-down member can be a plate-like structure or a columnar structure. Place the pre-assembled motor rotor press-fitting and solidifying tooling on the tabletop of the frame, and then the linear driving structure drives the pressing-down member to move downward. The pressing-down member applies pressure to the cover plate 10, and the cover plate 10 is pressed downward to compress the elastic member 32. At the same time, the locking rod 41 can be smoothly locked into the locking hole 22. Then, the linear driving structure drives the pressing-down member to reset. The linear driving structure can be a linear driving structure such as a cylinder, a hydraulic cylinder or a linear module, and no specific limitation is made here. The specific structure of the pressing-down mechanism is relatively common in the prior art and will not be elaborated here.

[0071] In an alternative embodiment, rotary cylinders can be respectively arranged at positions of the pressing-down member corresponding to each locking assembly 40. The output end of the rotary cylinder can be detachably connected to the rotary handle 42, and the rotary cylinder can drive the rotary handle 42 to drive the locking rod 41 to rotate. After the pressing-down member presses the cover plate 10 to a preset position, the rotary cylinder is connected to the rotary handle 42 and drives the rotary handle 42 to rotate. The rotary handle 42 drives the locking rod 41 to rotate, so as to lock the locking rod 41 in the locking hole 22. Such a setting can realize the automatic pressing of the cover plate 10 and the automatic locking of the locking assembly 40, improve the automation degree and save labor costs. Of course, the rotary handle 42 can also be manually screwed.

[0072] In an alternative embodiment, the detachable connection between the rotary cylinder and the rotary handle 42 can be realized by the cooperation of a protrusion and a groove. That is to say, when the pressing-down member contacts the cover plate 10, the protrusion at the output end of the rotary cylinder just inserts into the groove on the rotary handle 42, or the groove at the output end of the rotary cylinder just sleeves outside the protrusion on the rotary handle 42, realizing the circumferential limit between the rotary cylinder and the rotary handle 42. The output end of the rotary cylinder can drive the rotary handle 42 to rotate, and the connection between the output end of the rotary cylinder and the rotary handle 42 is convenient and fast.

[0073] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention, and are not limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. The motor rotor pressing and curing tooling is characterized by: include: A cover plate (10) and a bottom plate (20) are detachably arranged opposite to each other, and a receiving space (50) for placing a rotor (100) is formed between the cover plate (10) and the bottom plate (20), wherein the rotor (100) comprises a rotor disk (101) and a plurality of magnetic steels (102) embedded in one side of the rotor disk (101); A plurality of elastic pressing components (30) are evenly distributed along the circumference of the rotor disk (101) and are arranged on one of the base plate (20) and the cover plate (10); one end of the plurality of elastic pressing components (30) extends into the accommodating space (50) and elastically presses against the rotor disk (101) at the same time, and the other of the base plate (20) and the cover plate (10) presses against the plurality of magnetic steels (102).

2. The motor rotor pressing and curing tooling according to claim 1 is characterized in that: The magnetic steel (102) is arranged toward the cover plate (10), and the cover plate (10) is pressed against the magnetic steel (102). A plurality of elastic pressing components (30) are arranged on the base plate (20) and elastically abut against the rotor disk (101) at the same time.

3. The motor rotor pressing and curing tooling according to claim 2 is characterized in that: The elastic pressing component (30) comprises: A pressing member (31) is movably arranged on the bottom plate (20), one end of the pressing member (31) extends into the accommodating space (50) and can abut against the rotor disk (101), and the other end can be limitedly matched with the bottom surface of the bottom plate (20); An elastic member (32), a limiting groove (21) is provided on the bottom plate (20), the elastic member (32) is accommodated in the limiting groove (21) and sleeved outside the pressing member (31), one end of the elastic member (32) abuts against the pressing member (31), and the other end abuts against the bottom of the limiting groove (21).

4. The motor rotor pressing and curing tooling according to claim 3 is characterized in that: The elastic member (32) is a rectangular spring.

5. The motor rotor pressing and curing tooling according to claim 3 is characterized in that: The pressing member (31) comprises a pressing block (311) and a limiting portion (312) connected to each other. The pressing block (311) extends into the accommodating space (50) and can abut against the rotor disk (101). The outer diameter of the pressing block (311) is larger than the outer diameter of the limiting portion (312). The elastic member (32) is sleeved on the limiting portion (312) and one end thereof abuts against the pressing block (311). One end of the limiting portion (312) away from the pressing block (311) is movably arranged through the bottom plate (20) and can be limitedly matched with the bottom surface of the bottom plate (20).

6. The motor rotor pressing and curing tooling according to claim 5 is characterized in that: A limiting boss (313) is formed at one end of the limiting portion (312) away from the pressing block (311); the outer diameter of the limiting boss (313) is larger than the outer diameter of the limiting portion (312); and the side of the limiting boss (313) close to the limiting portion (312) can abut against the bottom surface of the bottom plate (20).

7. The motor rotor pressing and curing tooling according to claim 5, characterized in that: The pressing block (311) is detachably connected to the limiting portion (312).

8. The motor rotor pressing and curing tooling according to claim 7 is characterized in that: The pressing block (311) is provided with a first connecting hole (3111) penetrating along the axial direction, and the limiting portion (312) is provided with a second connecting hole (3121) at one end close to the pressing block (311), and a fastening screw is sequentially passed through the first connecting hole (3111) and the second connecting hole (3121) to fix the pressing block (311) and the limiting portion (312).

9. The motor rotor pressing and curing tooling according to claim 5, characterized in that: The inner diameter of the limiting groove (21) is greater than the outer diameter of the pressing block (311).

10. The clamping device is characterized in that: It comprises a pressing mechanism and a motor rotor pressing and curing tool as claimed in any one of claims 1 to 9, wherein the pressing mechanism is used to drive the cover plate (10) to move towards the bottom plate (20) to press the rotor (100).

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